This apartment is ideal if you want easy skytrain access at a budget price. The host is a very nice guy, very responsive and helpful to resolve any issues.
The location is between the Arab town and Nana red light district, a short distance to Nana BTS. The street itself feels residential, with much less activity than the next streets in either direction.
Be aware there are multiple units in the building under the same management, with similar layout but slight variations in finishings and on different floors. The unit we stayed is on the second floor, which means the window view is directly at another building. The unit has newer finishings than some of the other units which makes up for the lower floor.
During the 10 nights we stayed, there was some noise from outside during only one evening and it ended before midnight, so it is relatively quiet for being located near a nightlife area.
The gym & pool area on the roof were pretty nice. Shared, but not busy during our stay.